Hello, i have 15 minutes could you answer these questions?

1. The role of the router is: (1 punkt) refining collisions original names to IP addresses number of authors of TCP / IP packets from the network to the destination securing the network inside against the outside and 2. In a star's physical topology, all networked devices are: (1 punkt) connected to two adjacent computers connected to one bus connected with each other with cable sections, forming a closed ring connected to a network node 3. Which layer of the ISO / OSI model is related to the IP protocol? (1 punkt) Transport Physical Network Data Links